290results about How to "Solve the pollution problem" patented technology

A process for preparing ammonium hydrogen fluoride and white carbon black simultaneously includes such steps as fast reaction between fluorosilicic acid (or ammonium fluorosilicate) and ammonia water to obtain the crystal seeds of white carbon black, adding water, fluorosilicic acid (or ammonium fluorosilicate) and ammonia water, reacting while controlling pH=8-9 to obtain the slurry of white carbon black deposit and ammonium fluoride solution, filtering, washing to obtain white carbon black paste and ammonium fluoride solution, and respectively preparing white carbon black and ammonium hydrogen fluoride from them.

The invention discloses an inorganic composite cementing material specialized for coal mine filling, and a preparation method thereof. The inorganic composite cementing material is composed of the following raw materials: compound Portland cement or cement clinker, ordinary Portland cement, blast furnace slag micropowder, industrial waste gypsum, carbide slag, fly ash, an additive, citric acid and an excitant. The preparation method comprises the steps of drying all raw materials by a dryer; conveying the dried raw materials into a ball mill for milling; storing the dried raw materials in a raw material bin; conveying various raw materials to a mixer by a conveying melt; mixing uniformly; and then storing the mixture in a finished product warehouse. A filling paste provided by the invention can not be solidified or can be slightly solidified in 4 h and a slump degree is higher than 230 mm, can provide enough time for maintenance of filling equipment, prevents phenomena of tube plugging and waste tube caused by a long distance conveying pipe, can guarantee that mining work can be continuously carried out without mining column after demolding in 8 hours, increases mining output, increases resource mining rate, saves labor cost and increases production efficiency.

The invention discloses a method for extracting ammonium molybdate from molybdenum concentrate through pressure ammonia leaching. The method comprises the following steps: adding the molybdenum concentrate into an autoclave containing aqueous ammonia, introducing oxygen into the autoclave, performing pressure ammonia leaching reaction at the temperature of between 140 and 200 DEG C under the pressure of between 1.0 and 2.5MPa, filtering the ore pulp obtained after the reaction, evaporating ammonia from the filtered solution, acidifying and settling the filtered solution, filtering the solution and washing the sediment to obtain the ammonium molybdate. The method of the invention has the advantages of wide application range, low cost, environmental protection and safety, high comprehensive utilization rate of resources and the like.

The invention discloses a method for preparing an inorganic lead-free halide perovskite film by coevaporation. The method comprises the following steps: (1) carrying out ultrasonic cleaning on a substrate material, and blow-drying with nitrogen for later use; (2) putting the substrate material on a coevaporation plant sample holder, vacuumizing the vacuum chamber until the vacuum degree is less than 5*10<-4>Pa, heating and rotating the substrate material, and keeping the temperature; (3) regulating the temperatures of a CsX evaporation source and an SnX2 evaporation source so that the CsX evaporation source and SnX2 evaporation source control the evaporation rate of the substrate material together; and (4) after the temperatures of the evaporation sources reach the set values and the evaporation rates become stable, carrying out double-source coevaporation deposition of the inorganic lead-free halide perovskite film, and cooling to room temperature, thereby obtaining the inorganic lead-free halide perovskite film. The inorganic lead-free halide perovskite film has the advantages of high stability, low cost, smooth surface, fewer internal defects, technique repeatability, environment friendliness and no pollution, and is suitable for large-scale industrialized production.

The invention provides a method for preparing protein fillers used for tanning by taking tanning chrome containing scrap materials as materials. The invention is characterized in that chrome containing scrap materials obtained from pieced wet blue are ground, and 100 portions by weight of chrome containing scrap materials are picked up and soaked in an alkali compound solution with the concentration of between 0.1 and 2wt percent, which at least submerges chrome containing scrap materials, for 10 to 48 hours, and the chrome containing scrap materials are drained, and the pretreated chrome containing scrap materials are put in a reaction kettle provided with a stirrer, a thermometer and a reflux condenser, and 6 to 20 portions by weight of alkali compounds and water at least submerging chrome containing scrap materials are added, and the reaction kettle is heated to a temperature of between 50 and 95 DEG C and keeps the temperature for 2 to 20 hours, and the thick liquids with deep color are obtained, and the pH value of the thick liquids is adjusted to between 7 and 10 by an inorganic acid after the thick liquids are cooled, and the thick liquids are filtered, and the filtrate with the solid content of between 10 and 20 percent, which is rich in containing collagen polypeptides, and the filter residues are obtained, and finally the protein fillers for tanning are obtained after the filtrate is condensed and dried; the filter residues are added with 100 to 150 portions by weight of water and has the pH value adjusted to between 2 and 3 by the inorganic acid solution, which obtains a Cr2(SO4)3 green solution used for the chroming agent.

A fuel as the substitute of coal contains X (40-80%), yellow clay (10-40%), water (5-25%), coal gangue (0-40%) and fly ash (0-40%). Said "X" is the compressed particles of biomass, organic life garbage, organic industrial dregs, or their mixture. Its preparing process is also disclosed. Its advantages are high heat value, long burning time and low cost.

A process for preparing potassium (or sodium) formate from the tail gas of calcium carbide furnace includes such steps as cooling, removing dust, purifying, compressing, alkali absorbing and drying.

The invention provides a planting method for a south ramulus mori bamboo fungus. The method comprises the following steps that A, ramulus mori is crushed; B, it is determined that the compost comprises 75-85 parts of ramulus mori scraps, 5-15 parts of corn flour, 2-4 parts of land plaster, 1-2 parts of magnesium sulfate, 1-2 parts of monopotassium phosphate, 1-2 parts of agar powder, 1-2 parts of vitamin B1; C, the compost is prepared; D, a greenhouse is established; E, spreading and seeding are carried out; F, planting management is carried out; G, fruiting management is carried out; H, harvesting at the right moment is carried out. Reasonable matching is carried out according to the biological characteristics of the bamboo fungus, the nutrition base prepared through the raw materials is abundant in nutrient, the constant nutrient feeding period is long, the growth and development of the bamboo fungus are facilitated, the mushroom cultivation period is shortened, the yield and quality are stable, and the ramulus mori resources are fully utilized.

The invention relates to an optical vacuum cold station for light microscope and electron microscope correlated imaging. The optical vacuum cold station comprises a vacuum chamber, an anti-pollution system adapter interface, an electron microscope sample lever adapter interface, an upper optical window, a lower optical window, a vacuum system adapter interface and a vacuum valve, wherein the anti-pollution system adapter interface is arranged in one end of the vacuum chamber, the electron microscope sample lever adapter interface is arranged in the other end of the vacuum chamber, the upper optical window is arranged in the upper wall of the vacuum chamber, the lower optical window is arranged in the lower wall of the vacuum chamber and opposite to the upper optical window, the vacuum system adapter interface is arranged in one side of the vacuum chamber, and the vacuum valve is arranged between the electron microscope sample lever adapter interface and the combination of the upper optical window and the lower optical window; a forvacuum channel is formed between the vacuum valve and the electron microscope sample lever adapter interface, and a forvacuum valve is arranged on one side of the forvacuum channel; vacuum seal rings are respectively arranged on the electron microscope sample lever adapter interface, the upper optical window, the lower optical window, the vacuum system adapter interface and the anti-pollution system adapter interface. The optical vacuum cold station can be widely applied to the light and electron correlated imaging and can also be applied to optical microscopic imaging independently.

The invention relates to a process for processing waste sulfuric acid by virtue of a pyrite acid-making roasting furnace. The process comprises the following steps: heating the roasting furnace by virtue of external heat, adding pyrite into the roasting furnace to burn when the temperature reaches above 400 DEG C, adding alkylated waste sulfuric acid into the roasting furnace through an acid pump when the temperature reaches 850-1100 DEG C, maintaining the temperature at 850-1100 DEG C until the waste sulfuric acid cracks to produce SO2 gas at the high temperature, wherein organic matters are simultaneously burnt into CO2, and mixed gas and SO2 gas produced during the burning of the pyrite form furnace gas; cooling, washing, demisting and drying the furnace gas, so as to produce qualified SO2 furnace gas, and converting and absorbing the furnace gas, so as to obtain qualified sulfuric acid. According to the process, the cracking of waste sulfuric acid is realized by virtue of heat of materials on a boiling layer of the pyrite acid-making roasting furnace, and natural gas does not need to be used as a heating source, so that the cracking cost is greatly lowered; and by taking waste sulfur produced by peripheral factories as a combustion improver, the cracking capacity is improved.

The invention discloses a vegetable seedling breeding matrix material made of a hickory cattail husk and a preparation method for the vegetable seedling breeding matrix material. The hickory cattail husk contains a plurality of alkaloid components and can kill or suppress survival or growth of other organisms; and the hickory cattail husk serving as the matrix material is mainly used in culture of the matrix at present. The vegetable seedling breeding matrix material made of the hickory cattail husk comprises the following raw materials in percentage by mass: 80 percent of hickory cattail husk, 5-10 percent of bean pulp and 10-15 percent of carbonized rice husk. The hickory cattail husk, the bean pulp and the carbonized rice husk are mixed and are subjected to stacking fermentation; and the obtained fermented product is subjected to solid and liquid separation by a screw extrusion method, so that alkaloid can be removed from the fermented product along with the liquid. Through fermentation, the alkaloid in the hickory cattail husk leaves out of the tissue and is removed through screw extrusion, so that the vegetable seedling breeding matrix material is formed; after the vegetable seedling breeding matrix material is mixed with other materials, a vegetable seedling breeding matrix can be formed; and the vegetable seedling breeding matrix material is suitable for large-scale production.

The invention discloses a paper pulp molding forming machine, comprising a machine body and a paper pulp slot lifting mechanism, a transfer die mechanism, a lower die moving mechanism, an upper die pressing down mechanism and a collecting mechanism which are arranged on the machine body; the paper pulp slot lifting mechanism is used for forming a paper pulp box; the transfer die mechanism is used for transferring the paper pulp box formed in the paper pulp slot lifting mechanism to the lower die moving mechanism; the lower die moving mechanism is used for sending the paper pulp box to the position of the upper die pressing down mechanism and is matched with the upper die pressing down mechanism to press and shape the paper pulp box; the upper die pressing down mechanism comprises an upper die assembly and a servo pressure cylinder for driving a lower die assembly to move up and down, and the servo pressure cylinder is of a mechanism drive structure. Mechanical drive is adopted, and the problem of pollution caused by hydraulic drive in the prior art is fundamentally solved; the precision and stability during work of the paper pulp molding forming machine are improved and the production cost is reduced while the production efficiency is improved.

The invention provides thiophene adsorbents and a purification method for treating thiophene-containing wastewater by the same, and belongs to the technical field of water treatment. The thiophene adsorbents are a layered double hydroxide (ZnAL-CO3-LDH) and a modified product thereof (SDS-ZnAl-LDH). Experiments show that the two layered adsorbents have the thiophene removing rate of over 74 percent respectively. For example, under the meta-acid condition, the SDS-ZnAl-LDH has the thiophene removing rate of over 90 percent. The layered double hydroxide and the modified product thereof are applied to adsorbing the thiophene-containing wastewater, and can effectively remove the thiophene in the wastewater, so the invention provides feasible high-efficiency adsorbents for treating the thiophene-containing wastewater, which has valuable significance for purifying the thiophene-containing wastewater and protecting the environment.

The invention provides a removing system for dioxin and metallic mercury in flying ash. The removing system comprises a dioxin dechloridation unit, a gas-liquid separator unit and a mercury adsorptionunit. The dioxin dechloridation unit is used for carrying out a dechloridation reaction on the dioxin in the flying ash and is further provided with a flying ash inlet and a mercury-containing steamoutlet. The gas-liquid separator unit is used for cooling mercury-containing steam to obtain separated mercury-containing liquid products and mercury-containing tail gas and is further provided with amercury-containing steam inlet and a mercury-containing tail gas outlet. The mercury-containing steam inlet is connected with the mercury-containing steam outlet. The mercury adsorption unit is usedfor adsorbing the mercury-containing tail gas and is further provided with a mercury-containing tail gas inlet. The mercury-containing tail gas inlet is connected with the mercury-containing tail gasoutlet. The dioxin dechloridation unit is used for removing the dioxin in the flying ash, the gas-liquid separator unit is used for cooling the mercury-containing steam so that most of the metallic mercury can be separated out in a liquid-state mode, then remaining mercury elements in the mercury-containing tail gas are removed with the mercury adsorption unit, and therefore the efficient mercuryremoving effect can be achieved.

The invention discloses a method for treating erythromycin slag, which comprises the following steps: (1) placing the slag to be treated in a fermenter, adding other yeast fermentation medium components, and mixing to obtain slag water system, sterilized; (2) take the yeast liquid with OD value not less than 0.6, add it into the fungus residue water system in step (1) according to the inoculum amount of 2-10% (v / v), at a temperature of 30-30 Ferment for 36-72 hours at 35°C, tank pressure 0.02-0.07MPa, air flow 0.2-1.0L / min, system pH 4.5-6.5, to obtain fermentation broth; (3) Separation of solid-liquid fermentation broth , to be precipitated and dried. The method of the present invention can effectively remove the erythromycin residue in the bacteria residue, effectively solve the pollution problem of the erythromycin residue, and the bacteria residue treated per unit volume is much, the cost is low, and the solid dry yeast powder produced at the same time can be used for other products such as feed , Organic nutrients in the fermentation industry, suitable for industrial applications.

The invention belongs to the field of resource utilization and environmental protection of waste electronic devices, and particularly relates to a recycling method of a waste lithium iron phosphate battery. The method comprises the following specific steps: high-temperature calcination, separation, burdening and grinding, and secondary calcination. According to the method, the waste lithium iron phosphate battery is subjected to high-temperature calcination in a closed environment; and the method is convenient for tail gas treatment, solves the pollution problem in the waste lithium battery disassembling process, improves the production efficiency, does not need acid, alkali and other control substances in the subsequent production process, obtains a lithium iron phosphate positive electrode material only by adding raw materials and additives for regeneration, and realizes comprehensive utilization and clean production of the waste lithium iron phosphate positive electrode material.